AlgaHaematococcus pluvialisand protective red pigment (astaxanthin) that it produces in its "red" stress phase.

What is it?

TheastaxanthinIt is a natural pigment from the carotenoid group, known for being one of theworld's most powerful antioxidantsIt is responsible for the reddish or pinkish color of organisms such as microalgae, salmon, prawns and flamingos.

Astaxanthin life cycle and production

TheH. pluvialisIt goes through two phases that determine its composition:

• Vegetative (green) phase:Under favorable conditions, the cells are mobile (flagellated) and rich in proteins (29-45%) and carbohydrates (15-17%).
• Stress phase (red):Faced with a hostile environment—intense light, lack of nutrients, or changes in salinity—the microalga enters a state of quiescence: it encysts and synthesizes large quantities of astaxanthin as a self-defense mechanism. In this state, lipids and the protective red pigment responsible for its extraordinary resistance predominate.

It ceases to be a green cell with motile flagella and becomes a motionless red cyst with a thick, protective cell wall. In this state, it can survive for years without water or nutrients, protected from oxidation and UV rays that could damage its DNA, waiting for favorable conditions to return.

Interesting facts

Why are flamingos pink?Astaxanthin travels through the food chain:

• Small crustaceans consume algae rich in this pigment.
• Salmon and flamingos (which are born gray) feed on these crustaceans and accumulate the pigment in their bodies, adopting their characteristic pink hue.

The "King" antioxidant for its potency

Astaxanthin fromH. pluvialisIt is nicknamed the “King of Carotenoids” due to its unique chemical structure and extraordinary potency against oxidative stress. Several studies place it far above other well-known antioxidants:

• 6,000 timesmore powerful than theVitamin C.
• 800 timesmore powerful than theCoenzyme Q10.
• 550 timesmore powerful than theGreen Tea Catechins.
• 100 timesmore powerful than theVitamin E.

Why is it the “King”? Unlike other antioxidants that stay on the surface, astaxanthin has an elongated molecular structure that allows it tocross the cell membrane from side to sideoffering protection both inside and out. Furthermore, it is considered astable “pure” antioxidant: it never becomes a pro-oxidant under normal conditions.

Cosmetic properties and benefits

The natural astaxanthin extracted from this microalga is significantly more potent than its synthetic version in neutralizing free radicals.

In cosmetics it is used for its properties:

• Powerful antioxidants
• Anti-aging and repairing
• Protective against UV radiation and blue light
• Elasticity and firmness enhancers

Other applications

In addition to its use in cosmetics, astaxanthin is being researched in various other fields:

• Eye health: associated with reduced eye strain and studied for its role in macular protection
• Nutraceutical: a common ingredient in antioxidant supplements
• Athletic performance: related to better muscle recovery and reduced oxidative stress after exertion
• Medicine: potential neuroprotective effects (Alzheimer's and Parkinson's), anti-inflammatory effects, and cardiovascular benefits are being investigated.
• Biotechnology: explored in biofuel production and wastewater bioremediation

At CUIDA-T, we've selected formulas that incorporate this powerful active ingredient in its natural form, prioritizing real effectiveness and clean compositions. You can currently find it in our facial oils with astaxanthin, where it acts as a daily antioxidant shield. Combine them with a prior application of a hydrating serum for a mindful and effective routine.